help.html

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    <h1>Arbitrary Precision Calculator – Help</h1>
    <p>
      Write your formulas as you're used to in JavaScript, one per line, e.g. <code>4*(b1111^b1010)+xff*o77</code>,
      i.e. bitwise XOR the binary values <code>1111</code> and <code>1010</code>, then multiply the result with 4
      (decimal), finally add the product of hexadecimal value <code>ff</code> and the octal value <code>77</code>.
      You can also assign values to variables like in <code>a = 2**128</code>.
      Choose number system of result output using the radio buttons.
    </p>
    <div style="display: flex; flex-direction: row; flex-wrap: wrap">
      <table>
        <caption>Operators</caption>
        <thead>
          <tr>
            <th>Operator</th>
            <th>Meaning</th>
          </tr>
        </thead>
        <tbody>
          <tr>
            <td><code>-</code></td>
            <td>unary minus</td>
          </tr>
          <tr>
            <td><code>~</code></td>
            <td>bitwise NOT</td>
          </tr>
          <tr>
            <td><code>**</code></td>
            <td>power</td>
          </tr>
          <tr>
            <td><code>*</code></td>
            <td>multiplication</td>
          </tr>
          <tr>
            <td><code>/</code></td>
            <td>division</td>
          </tr>
          <tr>
            <td><code>%</code></td>
            <td>remainder</td>
          </tr>
          <tr>
            <td><code>+</code></td>
            <td>sum</td>
          </tr>
          <tr>
            <td><code>-</code></td>
            <td>difference</td>
          </tr>
          <tr>
            <td><code>&lt;&lt;</code></td>
            <td>bitwise shift left</td>
          </tr>
          <tr>
            <td><code>&gt;&gt;</code></td>
            <td>bitwise shift right</td>
          </tr>
          <tr>
            <td><code>&lt;</code></td>
            <td>less than</td>
          </tr>
          <tr>
            <td><code>&gt;</code></td>
            <td>greater than</td>
          </tr>
          <tr>
            <td><code>&le;</code></td>
            <td>less or equal</td>
          </tr>
          <tr>
            <td><code>&ge;</code></td>
            <td>greater or equal</td>
          </tr>
          <tr>
            <td><code>==</code></td>
            <td>equal</td>
          </tr>
          <tr>
            <td><code>!=</code></td>
            <td>not equal</td>
          </tr>
          <tr>
            <td><code>&</code></td>
            <td>bitwise AND</td>
          </tr>
          <tr>
            <td><code>|</code></td>
            <td>bitwise OR</td>
          </tr>
          <tr>
            <td><code>^</code></td>
            <td>bitwise XOR</td>
          </tr>
          <tr>
            <td><code>=</code></td>
            <td>assignment</td>
          </tr>
          <tr>
            <td><code>&=</code></td>
            <td>compound assignment by bitwise AND</td>
          </tr>
          <tr>
            <td><code>|=</code></td>
            <td>compound assignment by bitwise OR</td>
          </tr>
          <tr>
            <td><code>^=</code></td>
            <td>compound assignment by bitwise XOR</td>
          </tr>
          <tr>
            <td><code>/=</code></td>
            <td>compound assignment by division</td>
          </tr>
          <tr>
            <td><code>*=</code></td>
            <td>compound assignment by multiplication</td>
          </tr>
          <tr>
            <td><code>%=</code></td>
            <td>compound assignment by remainder</td>
          </tr>
          <tr>
            <td><code>+=</code></td>
            <td>compound assignment by sum</td>
          </tr>
          <tr>
            <td><code>-=</code></td>
            <td>compound assignment by difference</td>
          </tr>
          <tr>
            <td><code>&lt;&lt;=</code></td>
            <td>compound assignment by bitwise shift left</td>
          </tr>
          <tr>
            <td><code>&gt;&gt;=</code></td>
            <td>compound assignment by bitwise shift right</td>
          </tr>
        </tbody>
        <tfoot>
          <tr>
            <td colspan="2">highest precedence first; use parentheses to modify precedence</td>
          </tr>
        </tfoot>
      </table>
      <table>
        <caption>Functions</caption>
        <thead>
          <tr>
            <th>Function</th>
            <th>Meaning</th>
          </tr>
        </thead>
        <tbody>
          <tr>
            <td><code>gcd(a, b)</code></td>
            <td>greatest common divisor</td>
          </tr>
          <tr>
            <td><code>lcm(a, b)</code></td>
            <td>least common multiple</td>
          </tr>
          <tr>
            <td><code>sqrt(a)</code></td>
            <td>square root</td>
          </tr>
          <tr>
            <td><code>max(a, b)</code></td>
            <td>maximum</td>
          </tr>
          <tr>
            <td><code>min(a, b)</code></td>
            <td>minimum</td>
          </tr>
        </tbody>
      </table>
    </div>
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